Calculus removing device

Abstract

The utility model relates to a calculus removing device, which comprises an outer pipe, an inner pipe and a calculus removing basket net or a calculus crushing rod, wherein the inner pipe can be sleeved in the outer pipe; the calculus removing basket net or the calculus crushing rod can be sleeved in the inner pipe; the calculus removing device is placed into a bile duct or a gall bladder through the expanded drainage pipeline, the calculus removing basket net is placed at the position of calculus through the inner pipe and the outer pipe, the calculus is sleeved with the basket net, the catheter is fixed, the basket net with the calculus is pulled outwards, and therefore the calculus can be crushed by clamping, and the calculus which cannot be crushed by clamping can be crushed by using the calculus crushing rod. Calculus fragments can be taken out of the body through the basket net.

Description

Technical Field

[0001] The present invention relates to a stone extraction device, and more particularly to a stone extraction device for intrahepatic bile duct stones. Background Art

[0002] Currently, there are three ways to remove intrahepatic bile duct stones:

[0003] 1. General surgeons use a surgical method to first incise the common bile duct, insert a choledochoscope into the intrahepatic bile duct, and remove the stones. However, due to the excessive curvature or stenosis of the intrahepatic bile duct, the stones cannot be removed.

[0004] 2. Interventional radiologists first puncture the intrahepatic bile duct with stones and expand the puncture duct. After waiting for 6 weeks, the puncture duct wall fibrosis is completed. Then, general surgeons insert a choledochoscope into the intrahepatic bile duct to remove the stones. However, due to the excessive curvature of the intrahepatic bile duct or the large size of the stones, the stones cannot be removed.

[0005] For left intrahepatic bile duct stones, general surgeons usually deal with them by removing the left lobe of the liver.

[0006] Currently, there are two ways to remove common bile duct stones:

[0007] 1. General surgeons use a surgical method to first incise the common bile duct, insert a choledochoscope into the common bile duct, and remove the stones.

[0008] 2. Gastroenterologists use a duodenoscope to electrocauterize the opening of the common bile duct with a lithotripsy basket inserted into the common bile duct to remove the stones. If the stones are too large, they cannot be removed.

[0009] For gallbladder stones, in addition to traditional medical supportive therapies, the current mainstream treatment method for general surgeons is laparoscopic cholecystectomy. However, for younger patients, removing the gallbladder at a young age has a long-term impact on their health in the long run.

[0010] In the above cases, general surgeons must perform the stone extraction surgery under general anesthesia for the patient. Patients with cardio-pulmonary diseases who cannot tolerate general anesthesia cannot undergo the stone extraction surgery. Utility Model Content

[0011] To solve the problems that the current mainstream treatment method for gallbladder stones is to directly remove the entire gallbladder, which may have a long-term impact on the health of younger patients in their long lives, and that patients with cardio-pulmonary diseases who cannot tolerate general anesthesia cannot undergo the stone extraction surgery, the present utility model provides a stone extraction device, which includes: an outer tube, an inner tube that can be sleeved inside the outer tube, and a lithotripsy basket or a lithotripter rod that can be sleeved inside the inner tube.

[0012] The outer tube column comprises an outer tube inner pipe, which extends from the first outer tube opening end to the second outer tube opening end and has two sections with different inner diameters, and the inner diameter of the outer tube inner pipe on the first outer tube opening end side is slightly smaller than that of the outer tube inner pipe on the second outer tube opening end side; and the inner tube column comprises an inner pipe, which extends from the first inner tube opening end to the second inner tube opening end and has two sections with different inner diameters, and the inner diameter of the inner pipe on the first inner tube opening end side is slightly smaller than that of the inner pipe on the second inner tube opening end side, and the two inner pipes with different inner diameters are gradually connected.

[0013] Among them, the right end of the outer tube body is provided with an outer tube body turning area, which then extends a distance to the outer tube body outlet end of the outer tube body at the right end; the right end of the inner tube body is provided with an inner tube body turning area, which then extends a distance to the inner tube body outlet end of the inner tube body at the right end; the right end of the stone crushing rod is provided with a stone crushing rod turning area which can be exposed from the inner tube body.

[0014] Wherein, the terminal pipe openings of the outlet end of the outer pipe body and / or the outlet end of the inner pipe body are arc-shaped.

[0015] The outer tube body is provided with a liquid suction hole after the outer tube body turning area and before the outer tube body outlet end.

[0016] When the inner tube body and the outer tube body are sleeved on the stone-removing basket, when the basket body is tightened, the inner tube body and the outer tube body will not curl due to the tightening force.

[0017] It can be seen from the above description that the utility model has the following beneficial effects and advantages:

[0018] The interventional radiologist first performs bile duct / gallbladder drainage on the patient, and after a day's rest, the drainage duct is expanded. After another day's rest, the utility model can be placed into the bile duct / gallbladder through the expanded drainage duct. At this time, the stone-taking basket can be placed at the stone through the inner tube and the outer tube, and the stone is inserted into the basket. The catheter is fixed, and the basket with the stone is pulled outward to crush the stone. If the stone cannot be crushed, the stone can be crushed with a stone crushing rod, and the stone fragments can be taken out of the body with the basket. The use of the utility model to establish the stone-taking duct and the stone-taking process only requires local anesthesia and sedatives.

[0019] Most patients who need stone removal have cholangitis or cholecystitis, and drainage tubes have been placed to improve the inflammation. Stone removal can be done by simply dilating the drainage tube. It only takes 4 days from the placement of the drainage tube to the start of stone removal. The utility model can improve the existing long treatment time of 6 weeks for choledochoscope stone removal.

[0020] For the lithotripsy pipeline and the lithotripsy process of the present utility model, only local anesthesia and sedatives are required. At the same time, patients with heart and lung diseases who cannot undergo general anesthesia can still have lithotripsy surgery. The entire lithotripsy process can be carried out in the outpatient department without hospitalization. For patients with gallbladder stones, the stones in the gallbladder can be completely removed, and thus the gallbladder can be retained, avoiding the problem of fat indigestion after gallbladder resection. For left intrahepatic bile duct stones, the lithotripsy catheter can also be used to remove the stones, eliminating the need for hepatectomy. There is no age limit and no stone size limit for removing stones using the lithotripsy catheter. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some examples or embodiments of the present utility model, and do not absolutely limit the technical scope of the present utility model. Unless obvious from the context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation. Among them:

[0022] Figure 1 Schematic diagram of a preferred embodiment of the outer tube and the inner tube of the present utility model.

[0023] Figure 2A Schematic diagram of a preferred embodiment of the outer tube joint and the inner tube joint of the present utility model.

[0024] Figure 2B Schematic diagram of a preferred embodiment of the arc-shaped closing of the end openings of the outlet end of the outer tube body and the outlet end of the inner tube body of the present utility model.

[0025] Figure 3 Schematic diagram of a preferred embodiment of the lithotripsy net basket and the lithotripsy rod of the present utility model.

[0026] Figure 4 Schematic diagram of the assembly of several preferred embodiments of the present utility model.

[0027] Figure 5 Schematic diagram of the use of several preferred embodiments of the present utility model.

[0028] Symbol Explanation:

[0029] 10 Lithotripsy device

[0030] <Outer tube>

[0031] 11 Outer tube

[0032] 111 Outer tube joint

[0033] 1111 First outer tube opening end

[0034] 1112 Second outer tube opening end

[0035] 1113 Outer pipe column body

[0036] 1114 Handheld piece

[0037] 1115 Outer pipe thread

[0038] 11131 Inner pipeline of outer pipe

[0039] 112 Outer pipe body

[0040] 1121 Connecting end of outer pipe joint

[0041] 1122 Transition area of outer pipe body

[0042] 1123 Outlet end of outer pipe body

[0043] 1124 Liquid suction hole

[0044] <Inner pipe>

[0045] 12 Inner pipe

[0046] 121 Inner pipe joint

[0047] 1211 First open end of inner pipe

[0048] 1212 Second open end of inner pipe

[0049] 1213 Inner pipe column body

[0050] 122 Inner pipe body

[0051] 1221 Connecting end of inner pipe joint

[0052] 1222 Transition area of inner pipe body

[0053] 1223 Outlet end of inner pipe body

[0054] <Stone extraction net basket>

[0055] 13 Stone extraction net basket

[0056] 131 Net basket pipe body

[0057] 132 Net basket

[0058] 1321 Net basket opening

[0059] <Stone crushing rod>

[0060] 14 Stone crushing rod

[0061] 141 Handheld ring

[0062] 142 Stone crushing rod body

[0063] 143 Transition area of stone crushing rod body

[0064] O Surgical opening

[0065] S Stone location

[0066] S1, S2, S3, S4 Stones Detailed implementation manners

[0067] The present utility model will hereinafter be described in detail with several preferred embodiments. The attached drawings are merely some exemplary representatives or embodiments of the present utility model. For those with ordinary knowledge in the field to which the present utility model belongs, without creative efforts, the present utility model can also be applied to other similar situations according to these drawings.

[0068] The terms "system", "device", "unit" and / or "module" that may be used in the following description of the present utility model are a way to distinguish different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the said words can be replaced by other expressions. As shown in the present utility model, unless the context clearly indicates an exceptional situation, words such as "a", "an", "one" and / or "the" do not specifically refer to the singular number and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0069] Please refer to Figure 1 , Figure 2A and Figure 2B , a stone extraction device 10, which comprises an outer tube 11, an inner tube 12 that can be sleeved inside the outer tube 11, and a stone extraction net basket 13 or a lithotripter rod 14 that can be sleeved inside the inner tube 12.

[0070] <Outer tube>

[0071] The outer tube 11 comprises an outer tube joint 111 and an outer tube body 112 that is detachably and fixedly connected to the outer tube joint 111. The outer tube joint 111 is as Figure 2AAs shown below, it includes a first outer tube opening end 1111 on the left and a second outer tube opening end 1112 on the right. The first outer tube opening end 1111 extends from the second outer tube opening end 1112 to form an outer tube column 1113. An outer tube inner pipe 11131 of the outer tube column 1113 extends from the first outer tube opening end 1111 to the second outer tube opening end 1112 and has two sections with different inner diameters. The inner diameter of the outer tube inner pipe 11131 on the first outer tube opening end 1111 side is slightly smaller than that of the outer tube inner pipe 11131 on the second outer tube opening end 1112 side, and an outer tube thread 1115 is provided on the outer tube wall on the first outer tube opening end 1111 side. A handle piece 1114 is provided on the outer side of the outer tube column 1113 at the side of the second outer tube opening end 1112 and extends toward both outer sides of the outer tube column 1113 in a sheet-like shape.

[0072] The outer tube body 112 is a long thin tube. Figure 1 , Figure 2A and Figure 2B The left end includes an outer tube joint connection end 1121 and extends in a strip shape to the right end, and the outer tube body 112 at the right end is provided with an outer tube body turning area 1122 and then extends a short distance to an outer tube body outlet end 1123 of the outer tube body 112 at the right end. At the same time, the outer tube diameter of the outer tube joint connection end 1121 is slightly smaller than the outer tube inner pipe 11131 of the outer tube column 1113 of the second outer tube opening end 1112, and can be sleeved and clamped on the second outer tube opening end 1112. The design of the outer tube body turning area 1122 helps the utility model to have a more flexible angle to penetrate into the body.

[0073] Preferably, the outer tube body 112 is provided with at least one suction hole 1124 extending from the outer tube body turning zone 1122 to the outer tube body outlet end 1123, so that excess tissue fluid can be absorbed during the stone removal process. The end tube opening of the outer tube body outlet end 1123 is arc-shaped. The material of the outer tube body 112 is preferably slightly harder than the hardness of human tissue, so that it can penetrate into the human body and reach the site of application. At the same time, the end tube opening of the outer tube body outlet end 1123 is arc-shaped, which can avoid damaging the human tissue passing through.

[0074] <Inner tube>

[0075] The inner tube 12 includes an inner tube joint 121 and an inner tube body 122 detachably fixedly connected to the inner tube joint 121 .

[0076] The inner pipe joint 121 is as Figure 2AAs shown on the upper side, it includes a first inner tube opening end 1211 at the left end and a second inner tube opening end 1212 at the right end. The first inner tube opening end 1211 extends from the second inner tube opening end 1212 to form an inner tube column 1213. An inner pipe 12131 of the inner tube column 1213 extends from the first inner tube opening end 1211 to the second inner tube opening end 1212 and has two sections with different inner diameters. The inner diameter of the inner pipe 12131 on the first inner tube opening end 1211 side is slightly smaller than that of the inner pipe 12131 on the second inner tube opening end 1212 side, and the two inner pipes 12131 with different inner diameters are gradually connected, and the outer tube wall on the first inner tube opening end 1211 side is provided with an inner tube thread (not shown). The inner tube column 1213 of the second inner tube opening end 1212 can be sleeved on the outer tube body 112 of the first outer tube opening end 1111 of the outer tube joint 111 , so that the inner tube joint 121 can be connected and combined with the outer tube joint 111 .

[0077] Preferably, in another preferred embodiment of the present invention, the inner tube joint 121 includes a sleeve (not shown) rotatably and movably annularly sleeved on the outer side of the inner tube joint 121 near the second inner tube opening end 1212. This sleeve is a standard sleeve of an existing stone removal device, and the present invention can be implemented with or without it.

[0078] The inner tube body 122 is also a long thin tube. Figure 1 The left end includes an inner tube joint connection end 1221 and extends to the right end in a long strip shape. The inner tube body 122 at the right end is provided with an inner tube body turning area 1222 and then extends a short distance to an inner tube body outlet end 1223 of the inner tube body 122 at the right end. At the same time, the outer tube diameter of the inner tube joint connection end 1221 is slightly smaller than the inner tube joint 121, and can be sleeved and clamped inside the inner tube joint 121. The length of the inner tube body 122 is longer than the outer tube body 112. When the inner tube body 122 is sleeved inside the outer tube body 112, the inner tube body outlet end 1223 can be exposed outside the outer tube body 112. The design of the inner tube body turning area 1222 helps the utility model to have a more flexible angle to penetrate into the body.

[0079] The end of the inner tube body outlet 1223 is arc-shaped. The material of the inner tube body 122 is preferably slightly harder than the hardness of human tissue, so it can penetrate into the human body and reach the treatment site. At the same time, the end of the inner tube body outlet 1223 is arc-shaped, which can avoid damaging the human tissue passing through.

[0080] Furthermore, the materials of the outer tube joint 111 and the outer tube body 112 of the outer tube 11, as well as the inner tube joint 121 and the inner tube body 122 of the inner tube 12, include colorless or colored polyvinyl chloride (PVC), polyethylene (PC), or polypropylene (PE). Preferably, in order to be able to see through the present invention inside the human body during operation for easy operation, especially the materials of the outer tube body 112 and the inner tube body 122 contain a developer, such as barium sulfate, so that the present invention can be seen through by a fluoroscopic instrument, such as an X-ray machine. More preferably, each component of the present invention has antibacterial, antiviral, or even anti-mildew / mold functions, which can ensure the cleanliness during implementation and a longer storage period.

[0081] <Stone retrieval net>

[0082] Please refer to Figures 3 to 4 . The stone retrieval net 13 is as shown Figure 3 shown on the lower side, and includes a net tube body 131 and a net 132 extending at the end of the net tube body 131. The outer diameter of the net tube body 131 is slightly smaller than that of the inner tube body 122 and can be movably inserted into the inner tube body 122. At the same time, the length of the net tube body 131 is longer than that of the inner tube body 122. Therefore, when the net tube body 131 is inserted into the inner tube body 122, the net 132 can be exposed from the outlet end 1223 of the inner tube body. The net 132 is shown in the figure as a bag-shaped net structure, and the net structure forms several net openings 1321. The material of the net 132 is preferably a flexible or elastic metal, such as stainless steel wire.

[0083] <Stone-breaking rod>

[0084] The stone-breaking rod 14 includes a hand-held ring 141 at the left end and extends to the right as an elongated stone-breaking rod body 142 and forms a stone-breaking rod body turning area 143 to its right end. The outer diameter of the stone-breaking rod body 142 is slightly smaller than that of the inner tube body 122 and can be movably inserted into the inner tube body 122. At the same time, the length of the stone-breaking rod body 142 is longer than that of the inner tube body 122. Therefore, when the stone-breaking rod body 142 is inserted into the inner tube body 122, the stone-breaking rod body turning area 143 can be exposed from the outlet end 1223 of the inner tube body. The material of the stone-breaking rod 14 is preferably stainless steel.

[0085] Please refer to Figure 4, which is a schematic diagram of the stone extraction device 10 of the present utility model respectively equipped with the stone extraction net basket 13 or the lithotripter rod 14. As shown in the figure, when the present utility model is assembled, the inner tube body 122 is inserted into the inner part of the outer tube body 112 from the outlet end 1223 of the inner tube body towards the first outer tube opening end 1111 of the outer tube joint 111, and the outlet end 1223 of the inner tube body is exposed outside the outer tube body 112. At the same time, the inner tube joint 121 will be clamped to the outer tube joint 111. Then, the stone extraction net basket 13 or the lithotripter rod 14 can be further inserted into the inner tube body 122 from the inner tube joint 121 according to requirements. At the same time, since both the net basket tube body 131 and the lithotripter rod body 142 are longer than the inner tube body 122, the net basket 132 and the turning area 143 of the lithotripter rod body can be exposed outside the inner tube body 122.

[0086] Please further refer to Figure 5 , which is a schematic flow chart of the use of the stone extraction device 10 of the present utility model. It is used for extracting stones in the body, including but not limited to stones in the gallbladder or bile duct.

[0087] During the operation, first introduce the outer tube 11 through a surgical opening O to a stone location S near the body. The stone location S may be the gallbladder or bile duct and contains several stones S1 (S2, S3, S4...). Since the material of the outer tube body 112 is preferably slightly harder than the hardness of human tissues, it can penetrate deeper into the human body and reach the operation site better. Also, the end of the outlet end 1123 of the outer tube body is arc-shaped to avoid damaging the passing human tissues.

[0088] Then, insert the inner tube body 122 from the outlet end 1223 of the inner tube body towards the first outer tube opening end 1111 of the outer tube joint 111 into the inner part of the outer tube body 112. The outlet end 1223 of the inner tube body is exposed outside the outer tube body 112 and is closer to the stone location S. At the same time, the inner tube joint 121 will be clamped to the outer tube joint 111.

[0089] Next, when the size of each calculus S1 can be directly sleeved inside the wire mesh 13, the stone-removing wire mesh 13 can be selected. Insert the stone-removing wire mesh 13 from the inner pipe joint 121 into the inner pipe body 122, so that the wire mesh 132 is exposed from the inner pipe body 122 and contacts the calculus S1. After sleeving the calculus S1 into the wire mesh 132 from the wire mesh opening 1321, tighten the wire mesh body 131 towards the body exterior, so that the wire mesh 132 can tighten the calculus S1 and abut against the outlet end 1223 of the inner pipe body, and still continuously tighten the wire mesh body 132. At this time, the calculus S1 is broken into smaller pieces due to the tightening force of the wire mesh 132. Repeat the above steps several times according to the size of the calculus S1 until the size of the calculus S1 is smaller than the inner diameter of the inner pipe body 122. Then, the small pieces of the calculus S1 can be grabbed by the wire mesh 132 and pulled out of the body, and the stone is successfully removed. At the same time, since the inner pipe body 122 and the outer pipe body 112 of the present utility model are made of materials with a certain hardness but not enough to damage human tissues, when tightening the wire mesh body 131, the inner pipe body 122 and the outer pipe body 112 will not curl due to the tightening force, and can maintain their original shapes and assist the tightening force to enable the wire mesh 132 to tighten and crush the calculus S1.

[0090] On the other hand, when the size or hardness of the calculus S1 is too large, the hand-held ring 141 of the stone-crushing rod 14 can also be optionally held to manipulate the turning area 143 of the stone-crushing rod body. First, drill and break the calculus S1, and then grab the small pieces of the calculus S1 with the wire mesh 132 and pull them out of the body, and the stone is successfully removed.

[0091] In addition, unless otherwise clearly stated in the text, the use of the elements, elements, sequence order, use of numbers and letters, or other names described in the present utility model is not used to limit the order of the processes and methods of the present utility model. Although various examples are discussed in the above text for some currently considered useful embodiments of the utility model, it should be understood that such details only serve the purpose of illustration. The present utility model is not limited to the disclosed embodiments, but also includes its equivalent related changes and deformations.

[0092] In some embodiments, numbers are used to describe components and the quantity of attributes. It should be understood that such numbers used in the description of embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the said numbers allow a variation of ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, and such approximate values may vary according to the characteristics required by individual embodiments. In some embodiments, the numerical parameters should consider the specified significant digits and adopt the method of retaining the general number of digits. Although the numerical ranges and parameters used in some embodiments of the present utility model to confirm the breadth of its scope are approximate values, in specific embodiments, the setting of such numerical values is as precise as possible within the feasible range.

[0093] Finally, it should be understood that the embodiments described in the present utility model are only used to illustrate the principles of the embodiments of the present utility model. Other deformations may also fall within the scope of the present utility model. Therefore, by way of example and not limitation, alternative configurations of the embodiments of the present utility model may be considered to be consistent with the teachings of the present utility model. Accordingly, the embodiments of the present utility model are not limited to the embodiments explicitly introduced and described in the present utility model.

Claims

1. A stone removal device, characterized in that: It contains: An outer tube, an inner tube that can be sleeved inside the outer tube, and a stone basket or a stone crushing rod that can be sleeved inside the inner tube; The outer tube comprises an outer tube joint and an outer tube body detachably fixedly connected to the outer tube joint; wherein: The outer tube joint comprises a first outer tube opening end at the left end and a second outer tube opening end at the right end; the first outer tube opening end extends from the second outer tube opening end to form an outer tube column; and an outer tube thread is provided on the outer tube wall of the first outer tube opening end; The outer tube body is a long thin tube, the left end of which includes an outer tube joint connection end and extends to the right end in a long strip shape to an outer tube body outlet end of the outer tube body at the right end; the outer tube joint connection end has an outer tube inner pipe smaller in diameter than the second outer tube opening end of the outer tube column, and can be sleeved and clamped on the second outer tube opening end; The inner tube comprises an inner tube joint and an inner tube body detachably fixedly connected to the inner tube joint; wherein: The inner tube joint comprises a first inner tube opening end at the left end and a second inner tube opening end at the right end; the first inner tube opening end extends from the second inner tube opening end to form an inner tube column; the outer tube wall of the first inner tube opening end is provided with an inner tube thread; the inner tube column of the second inner tube opening end can be sleeved on the outer tube body of the first outer tube opening end of the outer tube joint; The inner tube body is a long thin tube, the left end of which includes an inner tube joint connection end and extends to the right end in a long strip shape to an inner tube body outlet end of the inner tube body at the right end; the outer tube diameter of the inner tube joint connection end is smaller than the inner tube joint, and can be sleeved and clamped inside the inner tube joint; the length of the inner tube body is longer than that of the outer tube body; The stone removal basket comprises a basket tube body and a basket extending from the end of the basket tube body; the outer diameter of the basket tube body is smaller than the inner tube body and can be inserted and moved inside the inner tube body; the length of the basket tube body is longer than the inner tube body; the basket is a bag-shaped net with a plurality of basket openings; and The stone crushing rod comprises a hand-held ring from the left end and a slender stone crushing rod body extending to the right; the outer tube diameter of the stone crushing rod body is smaller than the inner tube body and can be inserted and moved inside the inner tube body; the length of the stone crushing rod body is longer than the inner tube body.

2. The stone removal device according to claim 1, characterized in that: The outer tube column includes the outer tube inner pipe, which extends from the first outer tube opening end to the second outer tube opening end and has two sections with different inner diameters, and the inner diameter of the outer tube inner pipe on the first outer tube opening end side is smaller than that of the outer tube inner pipe on the second outer tube opening end side; and The inner tube column includes an inner tube, which extends from the first inner tube opening end to the second inner tube opening end and has two sections with different inner diameters. The inner diameter of the inner tube on the first inner tube opening end side is smaller than that of the inner tube on the second inner tube opening end side, and the two inner tubes with different inner diameters are gradually connected.

3. The stone removal device according to claim 1, characterized in that: A hand-held piece is provided outside the outer tube column body at the opening end side of the second outer tube and extends toward both sides of the outer tube column body in a sheet-like shape.

4. The stone removal device according to claim 1, characterized in that: The right end of the outer tube body is provided with an outer tube body turning area and then extends a distance to the outer tube body outlet end of the outer tube body at the right end; The right end of the inner tube body is provided with an inner tube body turning area and then extends a distance to the inner tube body outlet end of the inner tube body at the right end; When the inner tube body is sleeved inside the outer tube body, the outlet end of the inner tube body can be exposed outside the outer tube body; and The right end of the stone crushing rod is provided with a stone crushing rod body turning area which can be exposed from the inner tube body.

5. The stone removal device according to claim 1, characterized in that: The outlet end of the outer tube body and / or the outlet end of the inner tube body are / is closed in a circular arc.

6. The stone removal device according to claim 4, characterized in that: The outer tube body is provided with a liquid suction hole after the outer tube body turning area and before the outer tube body outlet end.

7. The stone removal device according to claim 1, characterized in that: The material of the outer tube and the inner tube includes colorless or colored polyvinyl chloride, polyethylene or polypropylene; The net is made of stainless steel; and The material of the stone crushing rod is stainless steel.

8. The stone removal device according to claim 7, characterized in that: The material of the outer tube body and / or the inner tube body contains developer.

9. The stone removal device according to claim 1, characterized in that: When the inner tube body and the outer tube body are sleeved on the stone-removing basket net, when the basket net tube body is tightened, the inner tube body and the outer tube body will not curl due to the tightening force.

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